Cooler



FIG. 1 is a top, left front perspective view of a cooler showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a top elevational view thereof.

The broken lines in FIGS. 1, 5, and 6 of the cooler are for the purpose of illustrating environment, and form no part of the claimed design. 

CLAIM The ornamental design for a cooler, as shown and described. 